<template>
  <div>
    <!--面包屑导航区域 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!--卡片视图区域 -->
    <el-card>
      <!--搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button @click="getUserList" slot="append" icon="el-icon-search"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible=true">添加用户</el-button>
        </el-col>
      </el-row>
      <!--用户列表区域 -->
      <el-table :data="userList" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <!--作用域插槽 -->
          <template slot-scope="scope">
            <el-switch
              @change="userStatusChanged(scope.row)"
              v-model="scope.row.mg_state"
              active-color="#13ce66">
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作">
          <template slot-scope="scope">
            <!--修改按钮 -->
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
            <!--删除按钮 -->
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUser(scope.row.id)"></el-button>
            <!--分配角色按钮 -->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!--分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total">
      </el-pagination>
      <!--添加用户的对话框 -->
      <el-dialog
        @close="addDialogClose"
        title="提示"
        :visible.sync="addDialogVisible"
        width="50%">
        <!--内容主体区域 -->
        <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
          <el-form-item label="用户名" prop="username">
            <el-input v-model="addForm.username"></el-input>
          </el-form-item>
          <el-form-item label="密码" prop="password">
            <el-input v-model="addForm.password"></el-input>
          </el-form-item>
          <el-form-item label="邮箱" prop="email">
            <el-input v-model="addForm.email"></el-input>
          </el-form-item>
          <el-form-item label="手机" prop="mobile">
            <el-input v-model="addForm.mobile"></el-input>
          </el-form-item>
        </el-form>
        <!--底部按钮区域 -->
        <span slot="footer" class="dialog-footer">
    <el-button @click="addDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="addUser">确 定</el-button>
  </span>
      </el-dialog>
      <!--修改用户的对话框 -->
      <el-dialog
        @close="editDialogClose"
        title="修改用户"
        :visible.sync="editDialogVisible"
        width="50%">
        <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
          <el-form-item label="用户名">
            <el-input v-model="editForm.username" disabled></el-input>
          </el-form-item>
          <el-form-item label="邮箱" prop="email">
            <el-input v-model="editForm.email"></el-input>
          </el-form-item>
          <el-form-item label="手机" prop="mobile">
            <el-input v-model="editForm.mobile"></el-input>
          </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
    <el-button @click="editDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="editUser()">确 定</el-button>
  </span>
      </el-dialog>
      <!--分配角色的对话框 -->
      <el-dialog
        @close="resetRole"
        title="分配角色"
        :visible.sync="setRoleDialogVisible"
        width="50%">
        <div>
          <p>当前的用户 : {{userInfo.username}}</p>
          <p>当前的角色 : {{userInfo.role_name}}</p>
          <p>分配新角色 :
            <el-select v-model="selectRoleId" placeholder="请选择">
              <el-option
                v-for="item in roleList"
                :key="item.id"
                :label="item.roleName"
                :value="item.id">
              </el-option>
            </el-select>
          </p>
        </div>
        <span slot="footer" class="dialog-footer">
    <el-button @click="setRoleDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
  </span>
      </el-dialog>
    </el-card>
  </div>
</template>

<script>
export default {
  data: function () {
    // 验证邮箱的校验规则
    var checkEmail = (rule, value, cb) => {
      // 验证邮箱的正则表达式
      const regEmail = /^\w+@\w+(\.\w+)+$/
      if (regEmail.test(value)) return cb()
      cb(new Error('请输入正确的邮箱！'))
    }
    // 验证手机号的校验规则
    var checkMobile = (rule, value, cb) => {
      // 验证手机号的正则表达式
      const regMobile = /^1[34578]\d{9}$/
      if (regMobile.test(value)) return cb()
      cb(new Error('请输入正确的手机号！'))
    }
    return {
      // 查询用户条件参数
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 5
      },
      // 用户数据列表
      userList: [],
      // 用户总数
      total: 0,
      // 控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加用户表单的校验规则
      addFormRules: {
        username: [
          {
            required: true,
            message: '请输入用户名',
            trigger: 'blur'
          },
          {
            min: 3,
            max: 10,
            message: '长度在 3 到 10 个字符',
            trigger: 'blur'
          }
        ],
        password: [
          {
            required: true,
            message: '请输入密码',
            trigger: 'blur'
          },
          {
            min: 6,
            max: 15,
            message: '长度在 6 到 15 个字符',
            trigger: 'blur'
          }
        ],
        email: [
          {
            required: true,
            message: '请输入邮箱',
            trigger: 'blur'
          },
          {
            validator: checkEmail,
            trigger: 'blur'
          }
        ],
        mobile: [
          {
            required: true,
            message: '请输入手机号',
            trigger: 'blur'
          },
          {
            validator: checkMobile,
            trigger: 'blur'
          }
        ]
      },
      // 控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      // 编辑用户的数据
      editForm: {},
      // 修改用户表单的校验规则
      editFormRules: {
        email: [
          {
            required: true,
            message: '请输入邮箱',
            trigger: 'blur'
          },
          {
            validator: checkEmail,
            trigger: 'blur'
          }
        ],
        mobile: [
          {
            required: true,
            message: '请输入手机号',
            trigger: 'blur'
          },
          {
            validator: checkMobile,
            trigger: 'blur'
          }
        ]
      },
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      // 角色列表信息
      roleList: [],
      // 已经选中的角色Id值
      selectRoleId: ''
    }
  },
  created () {
    this.getUserList()
  },
  methods: {
    // 获取用户列表数据
    getUserList: async function () {
      var { data: res } = await this.$http.get('users', { params: this.queryInfo })
      if (res.meta.status !== 200) return this.$message.error('获取用户列表失败！')
      this.userList = res.data.users
      this.total = res.data.total
    },
    // 监听pagesize改变的事件
    handleSizeChange: function (newSize) {
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听页码值改变的事件
    handleCurrentChange: function (newPage) {
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听Switch状态的改变
    userStatusChanged: async function (userInfo) {
      var { data: res } = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
      if (res.meta.status !== 200) {
        userInfo.mg_state = !userInfo.mg_state
        return this.$message.error('更新用户状态失败!')
      }
      this.$message.success('更新用户状态成功!')
    },
    // 监听添加用户对话框的关闭事件
    addDialogClose: function () {
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮添加新用户
    addUser: function () {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return ''
        // 发起添加用户的网络请求
        var { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status !== 201) return this.$message.error('添加用户失败！')
        this.$message.success('添加用户成功')
        // 关闭添加用户的对话框
        this.addDialogVisible = false
        this.getUserList()
      })
    },
    // 显示编辑用户的对话框
    showEditDialog: async function (id) {
      var { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status !== 200) return this.$message.error('查询用户失败！')
      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 点击按钮修改用户
    editUser: function () {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return ''
        // 发起修改用户的网络请求
        var { data: res } = await this.$http.put('users/' + this.editForm.id, {
          email: this.editForm.email,
          mobile: this.editForm.mobile
        })
        if (res.meta.status !== 200) return this.$message.error('修改用户失败！')
        // 关闭修改用户的对话框
        this.editDialogVisible = false
        // 刷新用户列表
        this.getUserList()
        // 提示修改用户成功
        this.$message.success('修改用户成功')
      })
    },
    // 监听关闭修改用户对话框的事件
    editDialogClose: function () {
      this.$refs.editFormRef.resetFields()
    },
    // 根据Id删除用户
    removeUser: function (id) {
      // 弹框询问是否删除
      // 点击取消返回一个字符串cancel,点击确认返回一个字符串confirm
      this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(async () => {
        var { data: res } = await this.$http.delete('users/' + id)
        if (res.meta.status !== 200) return this.$message.error('删除用户失败！')
        this.getUserList()
        this.$message.success('删除成功!')
      }).catch(() => {
        this.$message.info('已取消删除!')
      })
    },
    // 分配角色
    setRole: async function (userInfo) {
      this.userInfo = userInfo
      // 在展示对话框之前，先获取角色列表信息
      var { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) return this.$message.error('获取角色列表失败！')
      this.roleList = res.data
      this.setRoleDialogVisible = true
    },
    // 点击按钮进行分配角色
    saveRoleInfo: async function () {
      if (!this.selectRoleId) return this.$message.error('请选择需要分配的角色！')
      var { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, { rid: this.selectRoleId })
      if (res.meta.status !== 200) this.$message.error('分配角色失败！')
      this.getUserList()
      this.setRoleDialogVisible = false
      this.$message.success('分配角色成功！')
    },
    // 监听分配角色对话框事件
    resetRole: function () {
      this.selectRoleId = ''
      this.userInfo = {}
    }
  }
}
</script>

<style land="less" scoped>
  .el-pagination {
    display: flex;
    justify-content: center;
  }
</style>
